mcanulty



Patented Sept. l0, 1895.

(No Model" J. A. MOANULTY.

ATUATING MECHANSM FR FLOUR BOLTS.

.ANDREW I,GIWH.MCNWO-WAIDIINGTDILDL i iliviTnn STnTnfs PnTnrvT Ormes,

.IOIIN A. MCANULTY, Ol? MANI'IEIM, PENNSYLVANIA, ASSIGNOI-l. TO eIOIIN A.

MCANULTY, OF SAME PLACE, AND J. HAMILTON SMALL AND IV. T. NELSON,

OF YORK, PENNSYLVANIA.

CTUTlNG MECHANlSil/l FOR FLOUR-nBLTS.

SPECIFICATION forming part of Letters I atent No. 546,240, dated September 10, 1895 Applicationiiled January 18, 1895. Serial No.5351388. (No model.)

To all ich/0ml it may concern:

Be it known that I, JOHN A. MCANULTY, a citizen of the United States, residing at Manheim, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Actuating Mechanism for Flour-Bolts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to deur-bolts of the kind described in my application filed September IO, 189e, Serial No. 522.673-that is to say, a ilourbolt wherein an eccentric-shaft for giving gyratory motion to the sieves is combined with a sieve-supporting frame sleeved centrally upon and supported by the eccen tricshaft, and means whereby said frame is held against rotation while permitted gyratory movement.

lily present improvements consist in com bining with the instrnmentalities above enumerated a counterbalance or counterweight mounted on and revolving with the eccentricshaft `for the' purpose of. preventing the jar and shake and swaying or swinging motion of such machines, which, by reason of the unequal distribution of weight therein, is apt to occur when the parts are in rapid movement.

The nature of my improvement can best be explained and understood by reference to the accompanying drawings, in which- Figure l is a vertical central section of a flour-bolt embodying my invention. Fig. 2 is a plan of the upper sieve, showing in dotted lines the change in position of the sieve due to the thread of the eccentric.

.The sieve supporting frame, which is sleeved centrally vupon the eccentric-shaft, consists of a sleeve K, which tits around the eccentric or double eccentric I-I, and at its base rests upon the flange 71. of the eccentric. At the lower end of the sleeve K is a flanged portion le, which forms a support for the series of superposed sieving-frames L of any desired form and number. These sieves have central circular openings to t around the sleeve Ii, and they are secured to the same or to its base by bolts or in any other suitable manner.

The centrally sleeved sieve supporting frame is prevented from rotating with the eccentric-shaft by any customary or suitable means, which will permit said frame to receive the gyratory movement due to the rotation of the eccentric-shaft. 'These means consist in the present instance of metallic spring-bars O, having` their headed upper ends seated in downwardly-opening cup-shaped sockets at the outer extremities of lateral extensions of the sleeved supporting-frame. The bars O have their lower ends fitted in sockets in the lower part of the stationary framework of the machine. Thus far the machine is similar to that of my application, Serial No. 522,673, hereinbefore referred to.

Upon the upper end of the'eccentric-shaft is mounted a counterbalance, preferably made in the form of a wheel lil, having a sufficient weight in one side to counter-balance the weight of the sieves, together with the weight of material contained within the sieves when in operation, said counterbalance being mounted upon the shaft in such a manner as to carry the Weighted part directly opposite the greatest eccentric portion of the cam Il. One weight counterbalancng the other gives to the machine a steady movement free from Vibration. A drive-pulley N is mounted upon o the shaft below the eccentric-cams and sieving-frames, by which to connect by belt to a motive power.

W'hat I claim as new, and desire to secure by Letters Patent, is-

In a flour bolt the combination of an eccentric shaft for giving gyratory motion to the sieve; a sieve supporting frame sleeved centrally upon and supported by said shaft; means whereby said frame is held against rotation while permitted gyratory movement; and a counter balance on said eccentric shaft, all substantially as and for the purposes hereinbefore set forth.

In testimony whereof I atlix my signature in presence ot two witnesses.

JOHN A. MCANULTY.

Witnesses:

, H. C. ROBINSON,

Luvi P. WHITE.

Ll x 

